Auxiliary-air-inlet and mixing device for internal-combustion engines.



i 'this-spring vfconstantiy tends to maintain l the piston 23at the limit of its movement -to- Ward` th'eifiange'lQ and in a position to close the-airports 1,8. It will b e further ap- .parentfthati by adjusting the nut 21 the norjmal tension ofthespring '33 may be varied.

'In the' use of thedevice it Will be apparent.

vthat :upon the suction stroke of the engine the piston 23 will be moved against the iniuence .of the spring 38 to the position I. vshown in Fig. 3 and allow a certain quantity of air tribe-drawn' through the air ports 18 .v into the bore Aof the piston 23 Where it will Imingle ,with the mixture comingffrom the carbureter and thoroughly mixedrwith the" admitted through the auxiliary air ports 18.

Asthe speed of the engine increases the 3 movements of the piston 23 'will become more pronounced until it eventually partakes of sufiioient movement to completely uncover the air ports 18, at which time the supply of gasolene may be out down with of the engine.

What is claimed is:

l. In a device of the class described, the

combination of a tubular body having' air ports therein, a tubular piston mounted for reciprocation in the bore of the body and yieldingly held against movement in poition to close said air ports, and a rotary mixer mounted in the bore of the tubular piston. A

2. In a devicev of the class described, the combination of a tubular body having air ports therein, a tubular piston mounted for reciprocation in thc bore f the body, a bridge mounted on the body and extending across the bore thereof, a screw mounted on said bridge, a nut threaded on said screw, a spring having one end bearing against said nut and its other end against the tubularK piston and yieldingly holdingl the piston in position to close said air ports, and a rotaryv mii'er mounted in the bore of the piston.

In testimony whereof, 1 affix my signature, in the presence of two witnesses.

f.. EMILE MAITRE. lWitnesses:

PHILIP J. MIRANDA, @Matheson 

